Calcination is done in excess supply of Air. True/False.

Answer

**Step-by-Step Solution:**

1. **Understanding Calcination**: Calcination is a thermal treatment process used to convert carbonate ores into metal oxides. This process involves heating the ore in the presence of limited air or oxygen.

2. **Distinction from Roasting**: It is important to differentiate between calcination and roasting. While calcination is done in a limited supply of air, roasting is performed in excess air. Roasting is typically used for sulfide ores to convert them into oxides.

3. **Conclusion**: Since calcination occurs in a limited supply of air and not in excess, the statement "Calcination is done in excess supply of air" is false.

4. **Final Answer**: Therefore, the answer to the question is **False**.

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